Microstructural Evolution and Mechanical Properties of Hybrid Bevel Gears Manufactured by Tailored Forming

Behrens, Bernd‐Arno; Chugreeva, Anna; Diefenbach, Julian; Kahra, Christoph; Herbst, Sebastian; Nürnberger, Florian; Maier, Hans Jürgen

doi:10.3390/met10101365

“…As a new type of gear transmission mechanism, the non-bevel gear mechanism can realize the transmission of variable speed ratio between intersecting shafts and has the advantages of compact structure and high transmission efficiency [1][2]. At present, the non-bevel gears have been applied in limited-slip differential, variable gear pumps, stepping devices, etc.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on Non-Bevel Gear Transmission Mechanism

ZHOU,

XI,

GUO

et al. 2023

mech

0

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There are problems with vibration and impact in the meshing transmission process of non-bevel gear. Therefore, a simulation control method of non-bevel gear transmission based on ADAMS and MATLAB is proposed. First of all, the design modeling of non-bevel gear is briefly described, and the influence of order and eccentricity on its transmission ratio is analyzed; Then, the established non-bevel gear model is imported into ADAMS, and the constraint, motion pair, driving force, input and output variables are set. The data transfer relationship is established by using the ADAMS/Control module and MATLAB/Simulink interface, and the non-bevel gear mechanical system module is generated in MATLAB/Simulink; Finally, its joint simulation control system is built in the MATLAB/Simulink module, and its control simulation analysis is carried out. The research results show that by comparing and analyzing the simulation results of only constant value input and adding the PI control module, the amplitude, and frequency of the angular velocity and angular acceleration curves of the driven wheel are significantly reduced, that is, the vibration and impact in the non-bevel gear transmission are reduced, which verifies the correctness and feasibility of the control strategy, It provides a new method for the control design and development of the vibration reduction performance of non-bevel gear transmission; The result is beneficial to the application and popularization of non-bevel gears.

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“…To use the advantages of nickel-based alloys efficiently, its material use must therefore be reduced through local integration and the surface layer properties must be improved for use in the low-temperature range. In this context, Tailored Forming enables load-efficient material application and simultaneous improvement of the microstructural properties through forming hybrid pre-joined semifinished products [14].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Manufacture of Hybrid Wear Resistant Forging Tools using Tailored Forming Technology

Till

2023

9th ECCOMAS Thematic Conference on the Mechanical Response of Composites

0

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Forging tools that are subject to high thermo-mechanical loads require a correspondingly high heat resistance, hardness and ductility to prevent undesirable failure patterns due to wear, plastic deformation and crack formation. These properties are mainly required in the layer of the tool engraving close to the surface, as this area is exposed to the highest loads due to the contact with the hot workpiece. With the heat transfer from the workpiece to the tool, a cyclic tempering process of the tool material often occurs in this area, resulting in a decrease in wear resistance. Diffusion treatments of the tool surface, such as additional nitriding, cannot provide sufficient protection in thermally highly stressed tool areas, as the heat-affected zone in these areas extends beyond the surface modification. As a result, a tempered layer forms under the nitrided layer, on which it can slide off or break as a result of the high process loads and the wear protection is lost. The use of nickel-based alloys promises an improvement in service life due to their high specific heat. However, these alloys are much more expensive than hot-work tool steels and are more difficult to machine, which has a negative effect on the economic use as a die material. Furthermore, nickel-based alloys do not have the high strength of steel that is often required in the base material that is subject to low thermal loads. To reduce the material usage of nickel-based alloys, but to fully take advantage of their positive properties, the suitability of the Tailored Forming concept in thermo-mechanically highly stressed areas were investigated within the scope of this research. For this reason, hybrid forging tool inserts with a base material of hot-work tool steel and a protective nickel-based alloy surface layer were produced. The hybrid tools are manufactured through a process combination of rotatory friction welding and die forging. The surface enlargement as a result of the forming process is to be used specifically to protect the relevant tool areas with a layer of nickel-based alloy and at the same time minimize the use of the expensive material. The effects of the thermo mechanical treatments occurring in the joining zone were examined and the potential of the technology was investigated.

show abstract

“…To use the advantages of nickel-based alloys efficiently, its material use must therefore be reduced through local integration and the surface layer properties must be improved for use in the low-temperature range. In this context, Tailored Forming enables load-efficient material application and simultaneous improvement of the microstructural properties through forming hybrid pre-joined semifinished products [14].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Manufacture of Hybrid Wear Resistant Forging Tools using Tailored Forming Technology

Till

2023

9th ECCOMAS Thematic Conference on the Mechanical Response of Composites

0

View full text Add to dashboard Cite

Forging tools that are subject to high thermo-mechanical loads require a correspondingly high heat resistance, hardness and ductility to prevent undesirable failure patterns due to wear, plastic deformation and crack formation. These properties are mainly required in the layer of the tool engraving close to the surface, as this area is exposed to the highest loads due to the contact with the hot workpiece. With the heat transfer from the workpiece to the tool, a cyclic tempering process of the tool material often occurs in this area, resulting in a decrease in wear resistance. Diffusion treatments of the tool surface, such as additional nitriding, cannot provide sufficient protection in thermally highly stressed tool areas, as the heat-affected zone in these areas extends beyond the surface modification. As a result, a tempered layer forms under the nitrided layer, on which it can slide off or break as a result of the high process loads and the wear protection is lost. The use of nickel-based alloys promises an improvement in service life due to their high specific heat. However, these alloys are much more expensive than hot-work tool steels and are more difficult to machine, which has a negative effect on the economic use as a die material. Furthermore, nickel-based alloys do not have the high strength of steel that is often required in the base material that is subject to low thermal loads. To reduce the material usage of nickel-based alloys, but to fully take advantage of their positive properties, the suitability of the Tailored Forming concept in thermo-mechanically highly stressed areas were investigated within the scope of this research. For this reason, hybrid forging tool inserts with a base material of hot-work tool steel and a protective nickel-based alloy surface layer were produced. The hybrid tools are manufactured through a process combination of rotatory friction welding and die forging. The surface enlargement as a result of the forming process is to be used specifically to protect the relevant tool areas with a layer of nickel-based alloy and at the same time minimize the use of the expensive material. The effects of the thermo mechanical treatments occurring in the joining zone were examined and the potential of the technology was investigated.

show abstract

Microstructural Evolution and Mechanical Properties of Hybrid Bevel Gears Manufactured by Tailored Forming

Cited by 10 publications

References 24 publications

Simulation Research on Non-Bevel Gear Transmission Mechanism

Simulation Research on Non-Bevel Gear Transmission Mechanism

Investigation into the Manufacture of Hybrid Wear Resistant Forging Tools using Tailored Forming Technology

Investigation into the Manufacture of Hybrid Wear Resistant Forging Tools using Tailored Forming Technology

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